• For bigger tracks • Improves top speed • removes rotating • specifically designed profiles of 14T gears • Matched for 46T bevel gear #354846 • Smoother operation • Longer lifespan • Fits: XB8 & XB8E Bevel drive pinion gear - 14T – with longer gear ratio for larger songs where more top rate or less bottom power for less spinning is required. The bevel drive gear function especially designed profiles of 14T gears for a perfectly matched engagement for smoother operation, less drag and somewhat longer lifespan. Manufactured from premium HUDY Spring metal, accuracy machined on a special gear device as well as heat treated for maximum energy, durability, minimal wear, and extra-long lifespan. Fits together just with 354846